Glasersil

When i turn my heat or AC on it only blows thru the defroster. It does not switch to the vents. Where should i start checking to resolve this problem?

95 GT

PX429

you have a vacum leak

Glasersil

Inside the car? It just seems like the switch is not changing. It blows perfect thru the defroster LOL Where should i check?

goathead75

Does it go to the floor when you select floor? +1 on vacuum leak. I just went through this with mine and the yellow vacuum line came off the vacuum switch under the dash.

Glasersil

I can switch it to all of them, still goes thru the defroster...Do i have to take the entire dash off?[:@]

goathead75

No, look up above the gas pedal and you'll see a bright yellow hose. Make sure that's hooked up. There's also a vacuum switch under the glove box which should have 4 or 5 vacuum tubes going to it. Make sure that all those are hooked up. Since it's not changing at all I'm leaning more towards a vacuum leak too. Check by the passenger side strut tower near the firewall and make sure that all those vacuum lines are hooked up. That's probably where it is.

Glasersil

woo hoo more to do I'm on it!

5IVE.OH

that or the blend door is stuck.

goathead75

That would suck, then I think you'd have to pull the dash.